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This paper presents a validation study of a multi-physics coupling code for solid fuel pyrolysis in solid-fuel ramjet engine (SFRJ). An in-house code has been developed to model flow, turbulence, heat transfer, solid pyrolysis, and chemical reactions. Unsteady reacting simulations are performed for swirling and non-swirling flows in SFRJ with high-density polyethylene solid fuel cylindrical grain...
A gas engine is an internal combustion engine which runs on a gas fuel, such as coal gas, producer gas, biogas, landfill gas or natural gas. Generally the term gas engine refers to a heavy-duty industrial engine capable of running continuously at full load for periods approaching a high fraction of 8,760 hours per year. Unlike a gasoline automobile engine, which is lightweight, high-revving and typically...
This paper proposed a quick modeling method based on the software CATIA, using an example of modeling and simulation of the engine fan of an imported sedan. The commercial software CFD was used to calculate and analyze the flow field of vehicle's engine fan, combined with cooling fan experimental device. A preliminary checking of the performance of the engine fan was achieved, and the designing efficiency...
A three-dimensional numerical model for exhaust manifold catalytic converter with oxygen sensors was setup and analyzed by computational fluid dynamics technique. The results showed that its pressure profile and temperature profile had no mutations or concentrated area. The front surface evenness indexes of Catalytic Converter was higher than 0.97, the ratio of grid cells' maximum velocity and average...
This paper describes the idea of collaborative design process based on CAD/CAE/CFD for automotive engines design with a design process of a 4V105 diesel engine as an example. To establish collaborative design environment, the entire design of automobile engines will be concentrated and investigated. The collaborative will change the isolated ideas of traditional design and make the designing units...
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